Bitcoin by MtGox Mobile is the official mobile bitcoin application of the Mt. Gox Bitcoin Exchange. Bitcoin by MtGox Mobile lets you buy bitcoins, sell bitcoins. Mt. Gox, or Mtgox, was responsible for more than 70% of bitcoin transactions at In , hackers used stolen credentials to transfer bitcoins. Bitcoin by MtGox Mobile (formerly branded as MtGox Live) was a The app was used to buy and sell bitcoins, view the orderbook, and see.